The Z 55 Backpack by Gregory is part of their fast and light series. If you are a hiker who can only get out on the weekends, or a climber that needs a pack for cragging, the Z55 is an incredibly durable, yet lightweight bag that can carry up to 3660 cubic inches.

The Z55 is made with a Jetstream Suspension System that gives you solid support for heavier weights, and is combined with Aerotech mesh backpanel that allows free flow of air. Want to carry your load with ease? The Z55 also has padded scapula and lumbar pads to make your time with the pack more comfortable.

What’s in MY pack? Backpacking gear lists from a Great Smoky Mountains overnighter"Ever since we published a series of backpacking gear lists this spring (an ultralight backpacking gear list, a traditional backpacking gear list and a beginner’s backpacking gear list) several blog readers have contacted me to ask which of those items I personally carry. After all, it’s one thing to compile lists of suggested backpacking gear, and another thing entirely to disclose exactly what I take on the trail. Well, what better way to follow up those gear lists, and answer that question, than with another gear list?"

I love my Z55. I am a big guy (6'4" and 265lbs) with a history of back problems. I refused to give up my love of the outdoors because of a bad back so I bought a Gregory for its amazing fit and in my experience unrivaled adjustability and support. The pack is light and has plenty of room for a comfortable day hike or several days in the woods. My only concern is that the fabric seems too thin to be very durable, but over the course of its many outings with me I have never in anyway damaged the pack. So, I guess its more durable than it seems.

Great pack, I'm happy overall with it. Light, comfortable, carries the load well.. So with that said, here on in are the complaints (that's what we're looking for anyway!)It could definately use some more pockets/compartments, or MOLLE style straps, but the kangroo pouch and side access makes up for this, somewhat.. My principal complaint is the durability of the fabric. I wore the pack doing exactly the type of travel/hikes I have done/ do with my other bags (Lowe, EMS, Kelty).. however on the first day of real hiking, (a hike which was not distinct from previous trips with previous packs) the fabric on the outer compartment opened with holes upon scuffing. The abuse was in fact INFERIOR to that of my usual hikes with my other packs.. The fabric is indeed thin and light, but there is something wrong if my paper-thin shell holds up better than the "reinforced" nylon of this pack.. I continue to use it with a patch, and of course a rain cover now (rendering the once attractive waterproof zippers irrelevant) but I am surely disappointed about the durability of the fabric on this not-so-inexpensive pack. If it had'nt torn open, I'd be giving it a 5/5 with a side note about compartmental/molle inefficencies.